Setyaningsih A, Handayani ES, Solissa EM, Sapulete H, Fathurohman A. The Instrumental Role of Principal Leadership in Efforts to Improve The Quality of Education in Indonesia . JPDK [Internet]. 2023 Jan. 9 [cited 2025 Dec. 16];5(1):1954-61. Available from: https://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/11250